The only limit to our realization of tomorrow will be our doubts of today.

译文：纵览历史，凡是贤明的国和家，成功源于勤俭，衰败起于奢华。赏析：节俭不是吝啬，是对钱财的合理利用。不管何时，我们都要有忧患意识，保持俭朴的作风。

教育是可持续水产养殖发展最有力的工具。

We must think beyond our own lifetimes when it comes to energy.

"I am drawn to the lyric, the short poem, where every word has to be exact."

心灵是将挑战转化为机会的系统。